Shuttle check



May 17, 1938. P. DOEI QSELN SHUTTLE CHECK Filed Oct. '7, 1937 8 :5 Am; i

ATTORNEY.

Patented May 17, 1938 UNITED STATES PATENT ()FFIQE Application October 7,

3 Claims.

The usual loom shuttle-check or binder is a lever-like, somewhat curved and inflexible element pivoted to the shuttle-box on a vertical axis and held by a spring pressed inwardly or into the box with its convex side inward. I aim by this invention to provide a shuttle-binder which will impose a check on the shuttle which shall be more effective and gradual than that accomplished by the ordinary binder and which may be adjusted to suit a particular shuttle or to suit shuttles of different cross-sectional dimensions. Accordingly, the improved binder comprises two main parts, an elongated stiff body member and a flexible elastic shoe member extending lengthwise of the body member, there being a pair of posts arranged in coincidence with the respective end portions of the shoe member and each forming a projection of at least one member and extending into the other member and the shoe member having its side facing away from the body member convex from near one to near the other post as viewed in the longitudinal section of the shoe member, and combined with said parts is means to secure each post in the member into which it projects against rectilinear displacement lengthwise of such member. There is preferably also elastic means interposed between and abutted by the two members and positioned between the posts; this may be and preferably is adjustable. Adjustment of the shoe member toward or from the body member is also possible. In order to permit angular displacement of at least one end portion of the shoe member where, as in the example the post is a projection of the shoe member, such post is preferably pivoted in the body member on an axis transverse to the post and said members.

In the drawing,

Fig. 1 is a plan of the improved binder;

Fig. 2 is a sectional view of the part of the body member which immediately contains the screw Ill;

Fig. 3 is a view partly in plan and partly in section of one of the sets of parts, 2, 4 and 5; and

Fig. 4 is a side elevation, partly in longitudinal section of a portion of the body member having a boss 2.

Describing the invention according to the actual embodiment shown;

The body member of the binder includes a generally straight stiff metal strip 1 having one end rebent to provide a bearing la for the pivot by which the binder is supported on the box structure, it being understood that its other end, which is somewhat bent off, is to be abutted by 1937, Serial No. 167,791

some stop which limits the outward displacement of the binder by the shuttle when the latter enters the box. The mentioned spring which holds the binder pressed inwardly or into the box is adapted to engage the body member between two spaced ribs lb, one of which is assumed to be behind the other in Fig. 1.

Near each end of the straight portion of the body member is a boss 2 which may be welded to or forged integral therewith, each boss being here at that side of the strip which is inward or will adjoin the back Wall of the box. Each of these is formed with a bore 3 which in plan appears as a longitudinal slot at either face of the member but which as viewed in longitudinal section of the member appears double-convergent, as shown in Fig. 4, with the smaller diameter of each taper in a plane cutting the bore midway its length; each boss also has a threaded hole having its axis in said plane and extending through the boss transversely of the member. A set-screw 4 having a pointed end is screwed into each hole and is preferably equipped with a lock-nut 5.

6 is the mentioned binder-proper or shoe member, which is an elastic flexible metal strip or plate-spring. Fixed parts thereof, as welded thereto, are two posts I, one at each end thereof. The posts are received by the bores of the bosses of the body member and are adapted to be held therein by the set-screws 4. Each is confined by its bore against angular displacement transversely, but may tilt in a plane extending lengthwise of the bore, due to the latters specified convergent form. A fixed part of the shoe member is also a stud 8 arranged midway its length and projecting toward the body member.

Midway between the bosses of the body memher the latter has a threaded hole 9 and into this is screwed a screw l0 whose end affords a seat and has a central stud Illa. On screw I0 is a lock-nut H.

A helical spring I2 is interposed between screw It and the shoe member, its ends receiving the studs 8 and Illa.

To effect adjustments from time to time, it being assumed that the shoe member is at its ends confined to the body member in some way, as by the set-screws being set against the posts I, lock nut H is released and screw I0 turned to set it toward or from the shoe member, with consequent change in the curvature of the latter, the lock-nut being then re-set against the body memher.

To effect adjustment to suit shuttles varying more or less appreciably in dimensions the locknuts are released and the set-screws 4 turned to release the posts 1 so that the shoe member may be shifted bodily toward or from the body member, whereupon such set-screws and locknuts are re-set. When this adjustment is effected the other adjustment will usually of course also have to be effected. However, as to the adjustment now in question it is to be understood that so long as the shoe member presents convexity (as it may of course do inherently) I do not wish to be limited to presence of means for effecting said other adjustment; and that a means, as l2, may or may not be present between the body member and the intermediate portion of the shoe member.

The bores 3 are formed double-conical to permit the posts 1 to oscillate around the axes of the set-screws 4 when the end portions of the shoe member undergo angular displacement incident to the effort of the shuttle to straighten the shoe member and permit it again to assume curved form when the shuttle enters and leaves the box, respectively.

The ordinary shuttle binder is stifi or without inherent yield, being held up to its work of braking and thereupon holding the shuttle in the box by the spring. The weaver has no alternative but the usual and crude one of bending the binder to make it act more effectively on the shuttle. According to my invention the yield is inherent in the. binder and adjustment is possible, not with such distortion (as by bending the ordinary binder) as to misshape it, but so as to bring into effect just that frictional action which means properly braking the shuttle and its beingheld'against working out of the box in the reciprocation of the batten. And in this connection it is to be observed that, whereas a plate spring or the like shoe member presenting a concave face, could be used alone to brake the shuttle when it enters the box and thereupon offer resistance toits working out of the box, when the shoe member is confined at its end portions to the body member, and some elastic medium, as spring [2, is interposed between the body member and the intermediate portion of the shoe member to oppose movement of the latter toward the former, the braking of the shuttle takes place both more gradually and surely and the working of the shuttle out of the box is more certainly prevented. I therefore claim such shoe member and means, or spring, independently of the matter of adjustability.

Having thus fully described my invention what I claim is:

1. A shuttle-binder comprising an elongated body member, an elongated flexible elastic shoe member extending lengthwise of and presenting a convex face facing away from the body member, one end portion of the shoe member being supported by the body member and one member including a post pivoted in the other member on an axis transverse to said post and members and arranged adjacent to the other end of the shoe member.

2. A shuttle-binder comprising an elongated body member, an elongated flexible elastic shoe member extending lengthwise of and presenting a convex side facing away from the body member, one end portion of the shoe member being supported by the body member and the shoe member including a post pivoted in the body member on an axis transverse to said post and members and arranged adjacent to the other end of the shoe member.

3. A shuttle-binder comprising an elongated body member, an elongated flexible elastic shoe member extending lengthwise of and presenting a convex side facing away from the body member and said shoe member having at its respective end portions rigid posts projecting into the body member and each pivoted therein on an axis transverse to the post and said members, and elastic means interposed between and abutted by said members and positioned between the posts.

- PAUL DOERSELN. 

